fix(server): keep origin by default in proxy (#9193)

Author: PeachScript

packages/server/src/Server/Server.ts

@@ -278,10 +278,6 @@ class Server {
         return createProxyMiddleware(context!, {
           ...proxyConfig,
           onProxyReq(proxyReq, req: any, res) {
-            // 修改 host 模拟域名，避免 cors 只允许固定域名时报错
-            if (proxyReq.getHeader('origin')) {
-              proxyReq.setHeader('origin', target);
-            }
             proxyConfig.onProxyReq?.(proxyReq, req, res);
           },
           onProxyRes(proxyRes, req: any, res) {